Facebook SDK 3.1 for iOS available to developers

Attention all you iOS devs, Facebook has just released its Facebook SDK 3.1 for iOS. Among other things, the SDK allows developers to easily code their apps to allow single sign-on through Facebook IDs. This means that if your app allows users to sign into it via their Facebook account, you no longer have to ask them to enter their Facebook email address and password. One tap in iOS 6 and the user can instantly log in without having to type out a whole bunch of characters on the keyboard.

In addition to Facebook login, the SDK adds a whole bunch of other great features including: